Malicious PDF — malware analysis report

Static analysis result for SHA-256 26c929c09bce6dd9…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 09:31:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d1d5cbbb0c32d33ab88607c576712006 SHA-1: d1a60c4bba323f322e97e28b7842b645c8abf7bc SHA-256: 26c929c09bce6dd938b4390b8bb06bd318d19ca7bd6291434d26b487735a7cc0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/479516143/free-mods-for-minecraft-pe-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/rbx-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.freenom.comHeyIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000511b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x511B 24416 bytes
SHA-256: d51001f09f15f20f3a77e268f2eacaa9c55fb82bf0a2d3c3894825a249a10733
font_01_sfnt_off000087b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B4 18040 bytes
SHA-256: 55677d50e7f19372d6dfb723d72c398dee248f925afb4425ab44c3bb4ecd28f4